EP 3910758 A4 20220323 - MOTOR
Title (en)
MOTOR
Title (de)
MOTOR
Title (fr)
MOTEUR
Publication
Application
Priority
- KR 20190002261 A 20190108
- KR 2019017930 W 20191218
Abstract (en)
[origin: EP3910758A1] An embodiment provides a motor comprising a shaft, a rotor to which the shaft is coupled, and a stator disposed on the outer side of the rotor, wherein the stator includes a stator core and coils wound around the stator core, the stator core includes a yoke, a tooth protruding from the yoke, and a first groove and a second groove formed on the inner surface of the tooth, and distances to the first groove and the second groove around the center of the tooth in a circumferential direction are different from each other. Therefore, the motor can reduce cogging torque through the design of the grooves arranged to be asymmetrical around the center of the tooth.
IPC 8 full level
H02K 1/14 (2006.01); H02K 1/278 (2022.01); H02K 29/03 (2006.01)
CPC (source: EP KR US)
H02K 1/14 (2013.01 - KR); H02K 1/148 (2013.01 - EP US); H02K 1/27 (2013.01 - KR); H02K 1/278 (2013.01 - EP KR US); H02K 3/28 (2013.01 - US); H02K 7/003 (2013.01 - KR US); H02K 21/16 (2013.01 - EP US); H02K 29/03 (2013.01 - EP US); H02K 2213/03 (2013.01 - EP KR US)
Citation (search report)
- [XI] JP S5264610 A 19770528 - TOKYO SHIBAURA ELECTRIC CO
- [I] DE 202016107187 U1 20170119 - EBM PAPST MULFINGEN GMBH & CO KG [DE]
- [A] EP 3291426 A1 20180307 - MITSUBA CORP [JP]
- [A] CN 106160383 A 20161123 - CHINA FIRST AUTOMOBILE WORKS GROUP CO LTD
- See also references of WO 2020145538A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3910758 A1 20211117; EP 3910758 A4 20220323; CN 113273054 A 20210817; CN 113273054 B 20240213; JP 2022516269 A 20220225; KR 20200086087 A 20200716; US 2022060067 A1 20220224; WO 2020145538 A1 20200716
DOCDB simple family (application)
EP 19909546 A 20191218; CN 201980088480 A 20191218; JP 2021538329 A 20191218; KR 20190002261 A 20190108; KR 2019017930 W 20191218; US 201917420105 A 20191218